Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were: Aptitude Score 0 1 2 3 4 5 Frequency 7 4 2 5 3 3i) The mean aptitude score is: ii) The median aptitude score is: .

i)

And replacing we got:

ii) For this case we have a total of 24 values and we can calculate the median from the grouped data so we have the following values:

0,0,0,0,0,0,0,1,1,1,1,2,2,3,3,3,3,3,4,4,4,5,5,5

And we can calculate the median from the position 12 and 13 from the data ordered and we got:

Step-by-step explanation:

For this case we have the following data:

Aptitude       Frequency    

0                         7

1                          4

2                         2

3                         5

4                         3

5                         3

Part i

For this case we can calculate the mean with the following formula:

And replacing we got:

Part ii

For this case we have a total of 24 values and we can calculate the median from the grouped data so we have the following values:

0,0,0,0,0,0,0,1,1,1,1,2,2,3,3,3,3,3,4,4,4,5,5,5

And we can calculate the median from the position 12 and 13 from the data ordered and we got: